diff --git a/packages/vuetify/dev/App.vue b/packages/vuetify/dev/App.vue
index 3930116a33bd..f805a33603b5 100644
--- a/packages/vuetify/dev/App.vue
+++ b/packages/vuetify/dev/App.vue
@@ -1,17 +1,14 @@
 <template>
   <v-app>
-    <v-content>
-      <playground></playground>
-    </v-content>
+    <keep-alive>
+      <router-view></router-view>
+    </keep-alive>
   </v-app>
 </template>
 
 <script>
-  import Playground from './Playground'
-
   export default {
     components: {
-      Playground
-    }
+    },
   }
 </script>
diff --git a/packages/vuetify/dev/index.js b/packages/vuetify/dev/index.js
index 511b3c412013..dd8776dcdf2e 100644
--- a/packages/vuetify/dev/index.js
+++ b/packages/vuetify/dev/index.js
@@ -4,6 +4,9 @@ import Vuetify from 'vuetify'
 import * as locales from '../src/locale'
 import router from './router'
 import '@mdi/font/css/materialdesignicons.css'
+import Playground from './Playground'
+
+Vue.component('playground', Playground)
 
 Vue.config.performance = true
 
diff --git a/packages/vuetify/dev/router.js b/packages/vuetify/dev/router.js
index 3284b9ed60ff..a829612bb61f 100644
--- a/packages/vuetify/dev/router.js
+++ b/packages/vuetify/dev/router.js
@@ -4,10 +4,10 @@ import Router from 'vue-router'
 Vue.use(Router)
 
 const component1 = {
-  template: `<div class="title">Page 1</div>`,
+  template: `<v-content><playground /></v-content>`,
 }
 const component2 = {
-  template: `<div class="title">Page 2</div>`,
+  template: `<v-content><playground /></v-content>`,
 }
 
 const router = new Router({
diff --git a/packages/vuetify/src/services/application/index.ts b/packages/vuetify/src/services/application/index.ts
index 871c56bd6aed..0e4c10c90e23 100644
--- a/packages/vuetify/src/services/application/index.ts
+++ b/packages/vuetify/src/services/application/index.ts
@@ -36,7 +36,7 @@ export class Application extends Service implements IApplication {
     location: TargetProp,
     size: number
   ) {
-    this.application[location][uid] = size
+    this.application[location] = { [uid]: size }
 
     this.update(location)
   }